The information you're looking for (command params including quotes) is not available.

The shell (bash), not python, reads and interprets quotes--by the time python or any other spawned program sees the parameters, the quotes are removed. (Except for quoted quotes, of course.)

More detail

When you type a command into the shell, you use quotes to tell the shell which tokens on your command line to treat as a single parameter. Whitespace is used to break up your command line into individual params, and quotes are used to override that--to include whitespace within a parameter instead of to separate parameters.

The shell then forks the executable and passes to it your list of parameters. Any unquoted quotes have already been "used up" by the shell in its parsing of your command line, so they effectively no longer exist at this stage, and your command (python) doesn't see them.

By the way, I have to wonder why you care about getting the quotes. I have to say that at first glance it seems misguided. Perhaps we can help if you tell us why you feel you need them?

EDIT

In respose to OP's comment below, here's a way to output the original command line--or at least one that's functionally equivalent: